In your example, there is an obvious moral argument for an even split. When you're talking about a wider social contract, the morality is less clear. How are pe

In your example, there is an obvious moral argument for an even split. When you're talking about a wider social contract, the morality is less clear. How are people supposed to work out what's an intentional tax incentive and what's an immoral loophole? Although honestly, what are you doing signing such a dubious contract, even with your friend? If I saw something like that, I'd at least query it, at which point we've probably established a verbal contract for an even share.